Exercise towel



FIG. 1 is a top plan view of an exercise towel showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view of the bottom plan view of FIG. 5, the left side elevational view being a mirror image thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a top, rear, right side perspective view thereof, the handlebars shown in dashed lines are included for the purpose of illustrating environment and founs no part of the claimed design. 

CLAIM The ornamental design for an exercise towel, as shown and described. 